//
//  UIScrollviewExtensions.swift
//  FlexMediaPicker
//
//  Created by Martin Rehder on 30.09.2017.
/*
 * Copyright 2017-present Martin Jacob Rehder.
 * http://www.rehsco.com
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

import UIKit

class ScrollViewNotifications {
    static let ScrollViewBeginsZoom = "scrollview-begins-zoom"
    static let ScrollViewEndsZoom = "scrollview-ends-zoom"
}

extension UIScrollView: UIScrollViewDelegate {
    
    public func scrollViewWillBeginZooming(_ scrollView: UIScrollView, with view: UIView?) {
        let note = Notification(name: Notification.Name(rawValue: ScrollViewNotifications.ScrollViewBeginsZoom))
        NotificationCenter.default.post(note)
    }
    
    public func scrollViewDidEndZooming(_ scrollView: UIScrollView, with view: UIView?, atScale scale: CGFloat) {
        let note = Notification(name: Notification.Name(rawValue: ScrollViewNotifications.ScrollViewEndsZoom))
        NotificationCenter.default.post(note)
    }
}
